Clamp device for hair tinting



Oct. 13, 19j G. M'. HOFFMAN CLAMP DEVICE FOR HAIR TINTING Filed NOV. 7,1941 2 Sheets-Sheet 1 HUI/I Oct. 13, 1942. G. M. HOFFMAN CLAMP DEVICEFon HAIR TINTING 2 Sheets-Sheet 2 Filed Nm). 7, 1941 Patented Oct. 13,1942 UNITEDv STATES PATENT OFFICE CLAMP DEVICE FOR Hara TINTING GertrudeM. Hoffman, Omaha, Nebr. Application November 7, 1941, serial No.418,175

17 Claims.

This invention relates to new and yuseful improvements in clamp devicesfor hair tinting.

One of the objects of my invention is to provide simple, eiicient andadjustable clamping means whereby comparatively thin strands of tintedor dyed human hair may be tightly clampingly engaged and readilyadjustably supported upon the head to conveniently permit the portionsof the new growth of hair in such strand, near the roots of the hair, tobe tinted or dyed to compensate for such growth subsequent to theinitial dyeing of the hair.

Another object of my invention is to provide such adjustably-supportedclamping means in the form of pairs of cooperating bars of non-porousand non-absorbing material, preferably resilient material such asrubber, although non-absorbent fiber may be used, or other suitableplastic composition. Such bars being preferably elongated and of bothstraight and slightly arcuate shapes, and including clamps for tightlyclamping together each pair of the strand-supporting bars to therebyprevent seepage therebetween of the dying solution onto the portion ofthe strand of the dyed hair which is clamped between such bars so thatthe new gorwth of hair near the roots may be neatly dyed withoutstreaking 'and without double-tinting portions of the originally tintedhair which is securely held between the bars;

such bars, and clamps therefor, and their adjustable supports beingpreferably of a rubber or ber composition which is not effected by thedye or tinting solution to thereby obviate any chemical reaction orundesirable eiect upon the hair, in other words, vfor practicalpurposes, 'I prefer to make most of the parts of my improved device ofnon-metallic material and Where`me-v tallic parts are used to impartstrength, such metallic parts may preferably be coated with rubber orwith a pressed fiber composition which is not eiected by or non-reactiveto dyes.

Another feature of my invention is found in the undulating formation ofthe complementary clamping faces of the strand-supporting bars wherebythe strand of hair is not only more securely retained but the wavy formof the bar faces facilitates the tinting operation.

Other novel features of my invention are found in the screw-adjustablesupports for the strand-supporting bars; in the novel wedge-like 1clamps; and in the novel flexible adjustable means for interconnecting aplurality of spaced sets of the strand-retaining bars to thereby retainsame upon the head during the tinting and drying of the hair strand.

With the above and other objects in View which will readily becomeapparent from the perusal of the following specification and attacheddrawing, my invention consists in the'novel combination, constructionand arrangement of the parts and members shown in preferred embodimentsin the attached drawings, described in the following specifications, andparticularly pointed out in the appended claims.

In the drawings:

Fig. 1 is a side elevation of a clamp device for hair-tinting embodyingmy invention;

Fig. 2 is a half plan view and half longitudinal section taken on line2-2 of Fig. 1;

Fig. 3 is a vertical cross-section taken on line 3-3 of Fig. 1;

Fig. 4 is a side elevation of a clamp device for hair-tinting embodyinga modification of my invention;

Fig. 5 is a plan view of the clamp device shown in Fig. 4 f

Fig. 6is a vertical 6-6 of Fig. 4;

Fig. 7 is an end view of a rubber-covered resilient clamp which may beemployed in the clamp device illustrated in Figs. 4, 5 and 6;

Fig. 8 is a side elevation of a clamp device for hair-tinting embodyinganother modification of my invention but showing one of the end clampsremoved from the two strand-supporting bar members;

Fig. 9 is a plan view of the device shown in Fig. 8;

Fig. 10 is a top view of one of the clamps for the device shown in Figs.8 and 9;

Fig. 11 is a vertical cross-section through the clamp shown in Fig. 10taken Online II-II of Fig. 10;

Figs. 12 and 13 illustrate respectively plan view and side elevation ofa pair of reenforced strandsupporting bars;

Figs. 14 and 15 illustrate respectively plan View and side elevations ofa pair of interlocked strandsupporting bars; and

Fig. 16 illustrates my improved means for sup-A porting a plurality ofpairs of strand-supporting bars in relatively spaced positions duringthe drying of the dye.

Figs. 1 to 'l inclusive show my invention applied to pairs ofstrand-supporting bars of elongated arcuate shape, and Figs. 8 to 15inclusive show my invention applied to pairs of strand-supporting barsof elongated but straight form.

The bars illustrated in Figs. 12 to 15 inclusive are adapted to beclampingly secured together by cross-section taken on line clamps whichare applied from opposite ends of the bars and which clamps are of thetype illustrated in Figs. 1, 2, 3, and 11.

In the illustrations, like reference characters indicate like orcorresponding parts or members.

The embodiment of my invention illustrated in Figs. 1, 2 and 3 consistof a pair of elongated slightly arcuate bars 20 having preferablyundulating adjacent inner contact faces 2| of complementary formation tointerfit one another. The outer face of each bar 20 is formed with apair of integral oppositely disposed wedge-like formations 22, eachincreasing in cross-sectional thickness toward the center of the bar,narrower in width than the width of the face of the bar from which theformations project outwardly.

While the bars 20 are shown in slight arcuate formation somewhatconforming to the curve of the top of a human head, these bars 20 -maybe straight as shown in Figs. 8 to 15 inclusive, likewise, the hairstrand clamping faces 2| may be plane-aligned surfaces 23 as shown inFigs. 14 and although I prefer to'use the slightly undulating contactfaces`2l.

As'shown in Figs. 1 and 2, the strand of hair 24, which is to be dyed ortinted, is embfa'` :l between the undulating faces 2| of the baie, andthe two bars are then' tightly clampingly kec/ured together by theclamps 25 which are sildably moved over the wedge-like formations 22inwardly from the ends of the bars to thereby firmly press the bars 28toward eachother to tightly secure the strand of hair disposed betweenthem and thus prevent seepage of the dye onto the dyed hair held betweenthem.

Since the rate of growth of human hair is substantially uniform-the barsl2|) are so applied to the strandof hairthat the line ofthe-'new growthissubstantially aligned with the bottoms 2|)A of the bars 28 to thusestablish a guide for the operator performing the dyeing operation.

The clamps are of U-shape and each clamp is formed with spaced arms 26having channeled inner sides to fit the bar wedges 22, asl shown in Fig.3. Thev arms 26 are formed integrally with the back portion 21 which isthreaded to receive an adjustable threaded screw support 28 having aknurled head 29 and the lower end rotatably connected with a supportingbase 30.

To facilitate the tinting of the new growth of hair, the screws 28 areadjusted to extend the strand of hair 24 in raised or stretched positionupon the spaced three-legged bases 30 which rest upon the head.

The screw 28 and base 30 may be made of metal but I prefer to makeboth'of these parts of a highly compressed fiber composition.

From the above, the construction, operation and use of the device shownin Figs. 1, 2 and 3 will now be clearly understood.

rIVhe modied form of my invention illustrated in Figs. 4 to 7 inclusiveconsists of two strandsupporting bars 3| of trapeziform cross-sectionpreferably provided with contact faces 2| of undulating formation.

The end surface portions of the outer faces being serrated or providedwith a series of longitudinally exten-ding tooth-like formations 32 toprovide resistance to the upward movement of the two clamps 33 made ofresilient metal 33M embedded in molded rubber 3BR, as shown in Fig. 7,and having serrated portions 33S.

The clamps 33 may also be made of metal, as shown in Figs. 4 to 6inclusive, each clamp 33 consisting of a strip of spring steel formedinto a clamp of V-shaped cross-section having angularly flanged ends 33Aand having tooth-like formations 33B formed on portions of the opposedinner faces.

When the strand of hair 24 is interposed between these two bars 3|, theclamps 33 are forcibly mounted upon the serrated ends 32 to tightlyengage the strand of hair disposed between their undulating inner faces.The resistance between the clamp teeth 33B and the serrations 32 retainsthe clamps 33 in adjusted positions thereon and the clamp flanges 33Aform suitable supports for retaining the device upon the head. Theresiliency of the clamps 33 permit their adjustment verticallyrelatively to the longitudinal axis of the two bars for proper alignmentwith the line of the untinted growth of hair.

The slightly modied form of the device illustrated in Figs. 8, 9, 10 and11 is very similar in construction to that disclosed in Figs. 1, 2 and3. The structural differences in the bars 34 consist in the straightformation of the bars 34 and in the provision of a vertically disposedthreaded opening 35 at one end of each bar for the threaded adjustablesupport 28. The clamp 38 is simply made of stiff material of channeledcross-section bent into U-shaped form, as illustrated in Figs. 10 and11.

The bars 34 shown in Figs. 12 and 13 are'similar in construction tothose shown in Figs. 8 and 9 except that these illustrations show thestraight bars each reenforced with a thin strip 31 of resilient steelembedded in thel body of hard rubber and these barsv are adapted toA beclampingly engaged by the clamps 25 or the clamps36. Y 'i Thestrand-engaging bars 38 illustrated inFigs.v

14 l and 15 are not shownv reenforced, however, these bars andthe barsshown in Figs. 1, 2,4 vand 5, could all be reenforced like the bars 34shown in Figs. 12 and 13. My thought in showing the reenforcing stripsis that the cross-section of the rubber may in such reenforced barsbesomewhat reduced to` afford the use of thinner bars or to strengthen therubber body of'the'bars as shown in Figs. 12 and 13.

The bars 38 also differ from the bars shown in Figs. l2 and 13 in theformationof the planealigned Contact faces 23 and in forming each of thebars 38 with a transverse rib 39 near one end and with a transverse slot40 near the other end. The rib and slot being formed on the inner orcontact face and when the bars 38 are relatively reversed in mountedposition, the rib 39 of each bar will t into the slot 40 of the otherbar to thus interlock the bars against relative longitudinal movement.In the other bar designs shown in Figs. 2, 5, 9 and 12, the opposedundulating faces prevent relative longitudinal displacement.

Multiple sets of the strand-supporting -bars may be successively appliedto and supported on a persons head until the dye has dried by theemployment of suitable interconnecting members which interconnect themultiple sets of bars and facilitate their retainment on the head. Onetype of such interconnecting member is illustrated in Fig. 16.

The interconnecting member consists of a pair of spring-pressed clasps4| each having a spring 42 urging the toothed-engaging ends 43 intogripping position with the strand-supporting bar member 44. The clasps4| are interconnected with a pair of resilient metallic strips 45 eachhaving one end secured to one of theY clasps 4| and the opposite end inslidable embracement with the adjacent portion of the other strip 45.

The strips 4are relatively movable longitudinally to shorten or lengthentheir span between the clasps 4 I.

It is obvious to those skilled in the art to which my inventionappertains that the devices described and claimed herein are applicableto bleaching, ointment or tonic treatments as well as to dyeing of hair,and therefore, in each instance where the word dyeing is used, the sameshall be construed to include bleaching, ointment or tonic treatmentsand that throughout the specication and claims the word dyeing ortinting is synonymous with bleaching, or ointment or tonic treatments.

It is also obvious that the particular details of construction andarrangement of the parts and members, shown in the drawings anddescribed in the specification by way of illustration of preferredembodiments of my invention, may be varied without departing from thespirit of my invention which is defined in the appended claims.

I claim:

1. In a device for hair dyeing, a pair of bars of non-absorbent materialadapted to engage a strand of hair between them, clamping means adapt-edto retain the adjacent faces of said bars in pressure-grippingengagement with the strand of hair to prevent seepage of the dye ontothe portion of the strand retained between said bars and means forsupporting said bars on a persons head.

2. In a device for hair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a strand of hair between them,clamping means adapted to retain the adjacent faces of said bars inpressure-gripping engagement with the strand of hair, and supportingmeans disposed at the ends of said bars for supporting said bars on apersons head in spaced position above the scalp.

3. In a device for hair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a strand of hair between them,clamping means at opposite end portions of said bars adapted to retainsaid bars in pressure-gripping engagement with the strand of hair toprevent seepage of the dye onto the portion of the strand retainedbetween said bars, and adjustable means for supporting said bars on apersons head in a selectively spaced position above the scalp.

4. In a device for use in hair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a strand of dyed hair betweenthem to present the new growth of the undyed strand portion between thesaid bars and the scalp for dyeing thereof, clamps at the opposite endportions of said bars for retaining said bars in gripping engagementwith the strand of hair to prevent seepage of the ldye onto the portionof the strand retained between said bars, and adjustable supportingmeans at both ends of said pair of bars for supporting said bars on apersons head to thereby retain said undyed strand portion in stretchedposition to facilitate the dyeing thereof.

5. In a device for hair dyeing as embodied in claim 4, and including theadjacent faces of said F pair of elongated bars each having anundulating surface formation, said undulating surfaces being disposed incomplementary relatively interengaged arrangement.

6. In a device for hair dyeing as embodied in claim 4, and includingsaid pair of elongated bars having a, slight arcuate formYlongitudinally thereof and each bar having an undulating .inner face,said undulating faces being disposed in complementary relativelyinterengaged arrangement.

7. In a device for use in hair dyeing, a rpair of elongated bars ofnon-absorbent material adapted to engage a strand-of dyed hair betweenthem to present the new growth of the undyed strand to present the newgrowth of the undyed scalp for dyeing thereof, the outer face of each ofsaid bars having -oppositely disposed wedgelike integral formations, aU-shaped clamp slidably forcibly mounted from each end of each pair ofbars onto said wedge-like formations for clampingly retaining said barsin gripping engagement with the strand of hair, and a screwadjustablesupporting vmember in threaded engagement with each of said clamps foradjustably supporting said bars on a persons head to thereby retain saidundyed strand portion in stretched position to facilitate the dyeing`thereof.

8. In a device for use in vhair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a str-and yof dyed hair between-them to present the new growth of the undyed strand portion between thesaid bars and the scalp for dyeing thereof, a U-shaped clamp forciblymounted from each end of said pair of bars for clampingly retaining saidbars in gripping engagement with the strand of hair, and an adjustablesupporting member in threaded engagementwith each of said clamps foradjustably supporting said bars on a persons head to thereby retain saidundyed strand portion in stretched position to facilitate the dyeingthereof.

f 9. In a device for hair dyeing as embodied in claim 8, and includingthe adjacent faces of said pair of elongated bars each having anundulating surface formation, said undulating surfaces being disposed incomplementary relatively interengaged arrangement.

10. In a device for hair dyeing as embodied in claim 8, and includingsaid pair of elongated bars having a slight arcuate form longitudinallythereof and each bar having an undulating inner face, said undulatingfaces being disposed in complementary relatively interengagedarrangement.

11. In a device for use in hair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a strand of dyed hair betweenthem to present the new growth of the undyed strand portion between thesaid bars and the scalp for dyeing thereof, the outer face of each ofsaid bars having oppositely disposed wedge-like formations, a U-shapedclamp slidably forcibly mounted from each end of said pair of bars ontosaid Wedge-like formations for clamping retaining said bars in grippingengagement with the strand of hair, and a pair of screw adjustablesupporting members in threaded engagement with said bars, one at one endof one of said bars and the other at one end of the other of said bars,for adjustably supporting said bars on a persons head to thereby retainsaid undyed strand portion in stretched position to facilitate thedyeing thereof.

l2. In a device for use in hair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a strand of dyed hair betweenthem to present the new growth of the undyed strand portion between thesaid bars and the scalp for dyeing thereof, and U-shaped clarnpsremovably secured to and at spaced portions of said bars for clampinglyretaining said bars in gripping engagement with the strand vof hair.

13. In a device for hair dyeing as embodied in claim 12, and includingthe adjacent faces of said pair of elongated bars each having anundulating surface formation, said undulating surfaces being disposed incomplementary relatively interengaged arrangement.

14. In a device for hair dyeing as embodied in claim 12, and includingsaid pair of elongated bars having a slight arcuate form longitudinallythereof and each bar having an undulating inner face, said undulatingfaces being disposed in complementary relatively interengagedarrangement.

15. The combination with a pair of spaced elongated clamping meansadapted to clampingly engage a strand of hair therebetween including apair of spaced supports for supporting said means on a persons head, ofmeans for interconnecting said spaced strand-clamping means tofacilitate the retainment thereof on the personss head, comprising apair of clasps adapted to engage said strand-clamping means, and anelongated adjustable connector connecting said pair of clasps, saidconnector being adjustable longitudinally thereof to thereby lengthen orshorten same to accommodate said clasps to the spaced distance betweensaid pair of strandclamping means.

16. In a device for hair dyeing, a pair of bars of non-absorbentmaterial adapted to.engage a strand of hair between them, and clampingmeans adapted to retain the adjacent faces of said bars inpressure-gripping engagement with the strand of hair to prevent seepageof the dye onto the portion of the strand retained between said bars.

17. In a device for use in hair dyeing, a pair of elongated bars ofnon-absorbent material adapted to engage a strand of dyed hair betweenthem to present the new growth of the undyed strand portion between thesaid bars and the scalp for dyeing thereof, and clamps at the endportions of said bars for retaining said bars in gripping engagementwith the strand of hair to prevent seepage of the dye onto the portionof the strand retained between said bars and for supporting said bars ona persons head to thereby retain said undyed strand portion in stretchedposition to facilitate the dyeing thereof.

GERTRUDE M. HOFFMAN.

